What is the mean of the height of buidings in feet:

8 , 12 , 6 , 8, 12 , 18 , 11, 20 , 8

1 answer

The mean of the height of buildings in feet is:

(8 + 12 + 6 + 8 + 12 + 18 + 11 + 20 + 8) / 9 = 11 feet.